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netdata_netdata/database/rrdhost.c
thiagoftsm dd73f3e0cd
Repeating alarm notifications () 
* Alarm_repeat mergin the original!

* Alarm_repeat binary tree!

* Alarm_repeat binary tree finished!

* Alarm_repeat move function and format string

* Alarms bringing a new Binary tree

* Alarms fixing the last two

* Alarm_repeat useless var!

* Alarm fix format and repeat alarm!

* Alarm_backend steps!

* Alarm_repeat stopping to test cloud!

* Alarm_repeat stopping to test cloud 2!

* Alarm_repeat fixing when restart!
2019-07-01 11:55:16 +00:00

922 lines
32 KiB
C
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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_RRD_INTERNALS
#include "rrd.h"
RRDHOST *localhost = NULL;
size_t rrd_hosts_available = 0;
netdata_rwlock_t rrd_rwlock = NETDATA_RWLOCK_INITIALIZER;
time_t rrdset_free_obsolete_time = 3600;
time_t rrdhost_free_orphan_time = 3600;
// ----------------------------------------------------------------------------
// RRDHOST index
int rrdhost_compare(void* a, void* b) {
if(((RRDHOST *)a)->hash_machine_guid < ((RRDHOST *)b)->hash_machine_guid) return -1;
else if(((RRDHOST *)a)->hash_machine_guid > ((RRDHOST *)b)->hash_machine_guid) return 1;
else return strcmp(((RRDHOST *)a)->machine_guid, ((RRDHOST *)b)->machine_guid);
}
avl_tree_lock rrdhost_root_index = {
.avl_tree = { NULL, rrdhost_compare },
.rwlock = AVL_LOCK_INITIALIZER
};
RRDHOST *rrdhost_find_by_guid(const char *guid, uint32_t hash) {
debug(D_RRDHOST, "Searching in index for host with guid '%s'", guid);
RRDHOST tmp;
strncpyz(tmp.machine_guid, guid, GUID_LEN);
tmp.hash_machine_guid = (hash)?hash:simple_hash(tmp.machine_guid);
return (RRDHOST *)avl_search_lock(&(rrdhost_root_index), (avl *) &tmp);
}
RRDHOST *rrdhost_find_by_hostname(const char *hostname, uint32_t hash) {
if(unlikely(!strcmp(hostname, "localhost")))
return localhost;
if(unlikely(!hash)) hash = simple_hash(hostname);
rrd_rdlock();
RRDHOST *host;
rrdhost_foreach_read(host) {
if(unlikely((hash == host->hash_hostname && !strcmp(hostname, host->hostname)))) {
rrd_unlock();
return host;
}
}
rrd_unlock();
return NULL;
}
#define rrdhost_index_add(rrdhost) (RRDHOST *)avl_insert_lock(&(rrdhost_root_index), (avl *)(rrdhost))
#define rrdhost_index_del(rrdhost) (RRDHOST *)avl_remove_lock(&(rrdhost_root_index), (avl *)(rrdhost))
// ----------------------------------------------------------------------------
// RRDHOST - internal helpers
static inline void rrdhost_init_tags(RRDHOST *host, const char *tags) {
if(host->tags && tags && !strcmp(host->tags, tags))
return;
void *old = (void *)host->tags;
host->tags = (tags && *tags)?strdupz(tags):NULL;
freez(old);
}
static inline void rrdhost_init_hostname(RRDHOST *host, const char *hostname) {
if(host->hostname && hostname && !strcmp(host->hostname, hostname))
return;
void *old = host->hostname;
host->hostname = strdupz(hostname?hostname:"localhost");
host->hash_hostname = simple_hash(host->hostname);
freez(old);
}
static inline void rrdhost_init_os(RRDHOST *host, const char *os) {
if(host->os && os && !strcmp(host->os, os))
return;
void *old = (void *)host->os;
host->os = strdupz(os?os:"unknown");
freez(old);
}
static inline void rrdhost_init_timezone(RRDHOST *host, const char *timezone) {
if(host->timezone && timezone && !strcmp(host->timezone, timezone))
return;
void *old = (void *)host->timezone;
host->timezone = strdupz((timezone && *timezone)?timezone:"unknown");
freez(old);
}
static inline void rrdhost_init_machine_guid(RRDHOST *host, const char *machine_guid) {
strncpy(host->machine_guid, machine_guid, GUID_LEN);
host->machine_guid[GUID_LEN] = '\0';
host->hash_machine_guid = simple_hash(host->machine_guid);
}
// ----------------------------------------------------------------------------
// RRDHOST - add a host
RRDHOST *rrdhost_create(const char *hostname,
const char *registry_hostname,
const char *guid,
const char *os,
const char *timezone,
const char *tags,
const char *program_name,
const char *program_version,
int update_every,
long entries,
RRD_MEMORY_MODE memory_mode,
unsigned int health_enabled,
unsigned int rrdpush_enabled,
char *rrdpush_destination,
char *rrdpush_api_key,
char *rrdpush_send_charts_matching,
struct rrdhost_system_info *system_info,
int is_localhost
) {
debug(D_RRDHOST, "Host '%s': adding with guid '%s'", hostname, guid);
rrd_check_wrlock();
RRDHOST *host = callocz(1, sizeof(RRDHOST));
host->rrd_update_every = (update_every > 0)?update_every:1;
host->rrd_history_entries = align_entries_to_pagesize(memory_mode, entries);
host->rrd_memory_mode = memory_mode;
#ifdef ENABLE_DBENGINE
host->page_cache_mb = default_rrdeng_page_cache_mb;
host->disk_space_mb = default_rrdeng_disk_quota_mb;
#endif
host->health_enabled = (memory_mode == RRD_MEMORY_MODE_NONE)? 0 : health_enabled;
host->rrdpush_send_enabled = (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key) ? 1 : 0;
host->rrdpush_send_destination = (host->rrdpush_send_enabled)?strdupz(rrdpush_destination):NULL;
host->rrdpush_send_api_key = (host->rrdpush_send_enabled)?strdupz(rrdpush_api_key):NULL;
host->rrdpush_send_charts_matching = simple_pattern_create(rrdpush_send_charts_matching, NULL, SIMPLE_PATTERN_EXACT);
host->rrdpush_sender_pipe[0] = -1;
host->rrdpush_sender_pipe[1] = -1;
host->rrdpush_sender_socket = -1;
#ifdef ENABLE_HTTPS
host->ssl.conn = NULL;
host->ssl.flags = NETDATA_SSL_START;
#endif
netdata_mutex_init(&host->rrdpush_sender_buffer_mutex);
netdata_rwlock_init(&host->rrdhost_rwlock);
rrdhost_init_hostname(host, hostname);
rrdhost_init_machine_guid(host, guid);
rrdhost_init_os(host, os);
rrdhost_init_timezone(host, timezone);
rrdhost_init_tags(host, tags);
host->program_name = strdupz((program_name && *program_name)?program_name:"unknown");
host->program_version = strdupz((program_version && *program_version)?program_version:"unknown");
host->registry_hostname = strdupz((registry_hostname && *registry_hostname)?registry_hostname:hostname);
host->system_info = system_info;
avl_init_lock(&(host->rrdset_root_index), rrdset_compare);
avl_init_lock(&(host->rrdset_root_index_name), rrdset_compare_name);
avl_init_lock(&(host->rrdfamily_root_index), rrdfamily_compare);
avl_init_lock(&(host->rrdvar_root_index), rrdvar_compare);
if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete obsolete charts files", 1))
rrdhost_flag_set(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete orphan hosts files", 1) && !is_localhost)
rrdhost_flag_set(host, RRDHOST_FLAG_DELETE_ORPHAN_HOST);
host->health_default_warn_repeat_every = config_get_duration(CONFIG_SECTION_HEALTH, "default repeat warning", "never");
host->health_default_crit_repeat_every = config_get_duration(CONFIG_SECTION_HEALTH, "default repeat critical", "never");
avl_init_lock(&(host->alarms_idx_health_log), alarm_compare_id);
avl_init_lock(&(host->alarms_idx_name), alarm_compare_name);
// ------------------------------------------------------------------------
// initialize health variables
host->health_log.next_log_id = 1;
host->health_log.next_alarm_id = 1;
host->health_log.max = 1000;
host->health_log.next_log_id =
host->health_log.next_alarm_id = (uint32_t)now_realtime_sec();
long n = config_get_number(CONFIG_SECTION_HEALTH, "in memory max health log entries", host->health_log.max);
if(n < 10) {
error("Host '%s': health configuration has invalid max log entries %ld. Using default %u", host->hostname, n, host->health_log.max);
config_set_number(CONFIG_SECTION_HEALTH, "in memory max health log entries", (long)host->health_log.max);
}
else
host->health_log.max = (unsigned int)n;
netdata_rwlock_init(&host->health_log.alarm_log_rwlock);
char filename[FILENAME_MAX + 1];
if(is_localhost) {
host->cache_dir = strdupz(netdata_configured_cache_dir);
host->varlib_dir = strdupz(netdata_configured_varlib_dir);
}
else {
// this is not localhost - append our GUID to localhost path
snprintfz(filename, FILENAME_MAX, "%s/%s", netdata_configured_cache_dir, host->machine_guid);
host->cache_dir = strdupz(filename);
if(host->rrd_memory_mode == RRD_MEMORY_MODE_MAP || host->rrd_memory_mode == RRD_MEMORY_MODE_SAVE ||
host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
int r = mkdir(host->cache_dir, 0775);
if(r != 0 && errno != EEXIST)
error("Host '%s': cannot create directory '%s'", host->hostname, host->cache_dir);
}
snprintfz(filename, FILENAME_MAX, "%s/%s", netdata_configured_varlib_dir, host->machine_guid);
host->varlib_dir = strdupz(filename);
if(host->health_enabled) {
int r = mkdir(host->varlib_dir, 0775);
if(r != 0 && errno != EEXIST)
error("Host '%s': cannot create directory '%s'", host->hostname, host->varlib_dir);
}
}
if (host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
#ifdef ENABLE_DBENGINE
char dbenginepath[FILENAME_MAX + 1];
int ret;
snprintfz(dbenginepath, FILENAME_MAX, "%s/dbengine", host->cache_dir);
ret = mkdir(dbenginepath, 0775);
if(ret != 0 && errno != EEXIST)
error("Host '%s': cannot create directory '%s'", host->hostname, dbenginepath);
else
ret = rrdeng_init(&host->rrdeng_ctx, dbenginepath, host->page_cache_mb, host->disk_space_mb);
if(ret) {
error("Host '%s': cannot initialize host with machine guid '%s'. Failed to initialize DB engine at '%s'.",
host->hostname, host->machine_guid, host->cache_dir);
rrdhost_free(host);
host = NULL;
//rrd_hosts_available++; //TODO: maybe we want this?
return host;
}
#else
fatal("RRD_MEMORY_MODE_DBENGINE is not supported in this platform.");
#endif
}
if(host->health_enabled) {
snprintfz(filename, FILENAME_MAX, "%s/health", host->varlib_dir);
int r = mkdir(filename, 0775);
if(r != 0 && errno != EEXIST)
error("Host '%s': cannot create directory '%s'", host->hostname, filename);
}
snprintfz(filename, FILENAME_MAX, "%s/health/health-log.db", host->varlib_dir);
host->health_log_filename = strdupz(filename);
snprintfz(filename, FILENAME_MAX, "%s/alarm-notify.sh", netdata_configured_primary_plugins_dir);
host->health_default_exec = strdupz(config_get(CONFIG_SECTION_HEALTH, "script to execute on alarm", filename));
host->health_default_recipient = strdupz("root");
// ------------------------------------------------------------------------
// load health configuration
if(host->health_enabled) {
rrdhost_wrlock(host);
health_readdir(host, health_user_config_dir(), health_stock_config_dir(), NULL);
rrdhost_unlock(host);
health_alarm_log_load(host);
health_alarm_log_open(host);
}
// ------------------------------------------------------------------------
// link it and add it to the index
if(is_localhost) {
host->next = localhost;
localhost = host;
}
else {
if(localhost) {
host->next = localhost->next;
localhost->next = host;
}
else localhost = host;
}
RRDHOST *t = rrdhost_index_add(host);
if(t != host) {
error("Host '%s': cannot add host with machine guid '%s' to index. It already exists as host '%s' with machine guid '%s'.", host->hostname, host->machine_guid, t->hostname, t->machine_guid);
rrdhost_free(host);
host = NULL;
}
else {
info("Host '%s' (at registry as '%s') with guid '%s' initialized"
", os '%s'"
", timezone '%s'"
", tags '%s'"
", program_name '%s'"
", program_version '%s'"
", update every %d"
", memory mode %s"
", history entries %ld"
", streaming %s"
" (to '%s' with api key '%s')"
", health %s"
", cache_dir '%s'"
", varlib_dir '%s'"
", health_log '%s'"
", alarms default handler '%s'"
", alarms default recipient '%s'"
, host->hostname
, host->registry_hostname
, host->machine_guid
, host->os
, host->timezone
, (host->tags)?host->tags:""
, host->program_name
, host->program_version
, host->rrd_update_every
, rrd_memory_mode_name(host->rrd_memory_mode)
, host->rrd_history_entries
, host->rrdpush_send_enabled?"enabled":"disabled"
, host->rrdpush_send_destination?host->rrdpush_send_destination:""
, host->rrdpush_send_api_key?host->rrdpush_send_api_key:""
, host->health_enabled?"enabled":"disabled"
, host->cache_dir
, host->varlib_dir
, host->health_log_filename
, host->health_default_exec
, host->health_default_recipient
);
}
rrd_hosts_available++;
return host;
}
RRDHOST *rrdhost_find_or_create(
const char *hostname
, const char *registry_hostname
, const char *guid
, const char *os
, const char *timezone
, const char *tags
, const char *program_name
, const char *program_version
, int update_every
, long history
, RRD_MEMORY_MODE mode
, unsigned int health_enabled
, unsigned int rrdpush_enabled
, char *rrdpush_destination
, char *rrdpush_api_key
, char *rrdpush_send_charts_matching
, struct rrdhost_system_info *system_info
) {
debug(D_RRDHOST, "Searching for host '%s' with guid '%s'", hostname, guid);
rrd_wrlock();
RRDHOST *host = rrdhost_find_by_guid(guid, 0);
if(!host) {
host = rrdhost_create(
hostname
, registry_hostname
, guid
, os
, timezone
, tags
, program_name
, program_version
, update_every
, history
, mode
, health_enabled
, rrdpush_enabled
, rrdpush_destination
, rrdpush_api_key
, rrdpush_send_charts_matching
, system_info
, 0
);
}
else {
host->health_enabled = health_enabled;
if(strcmp(host->hostname, hostname) != 0) {
info("Host '%s' has been renamed to '%s'. If this is not intentional it may mean multiple hosts are using the same machine_guid.", host->hostname, hostname);
char *t = host->hostname;
host->hostname = strdupz(hostname);
host->hash_hostname = simple_hash(host->hostname);
freez(t);
}
if(strcmp(host->program_name, program_name) != 0) {
info("Host '%s' switched program name from '%s' to '%s'", host->hostname, host->program_name, program_name);
char *t = host->program_name;
host->program_name = strdupz(program_name);
freez(t);
}
if(strcmp(host->program_version, program_version) != 0) {
info("Host '%s' switched program version from '%s' to '%s'", host->hostname, host->program_version, program_version);
char *t = host->program_version;
host->program_version = strdupz(program_version);
freez(t);
}
if(host->rrd_update_every != update_every)
error("Host '%s' has an update frequency of %d seconds, but the wanted one is %d seconds. Restart netdata here to apply the new settings.", host->hostname, host->rrd_update_every, update_every);
if(host->rrd_history_entries < history)
error("Host '%s' has history of %ld entries, but the wanted one is %ld entries. Restart netdata here to apply the new settings.", host->hostname, host->rrd_history_entries, history);
if(host->rrd_memory_mode != mode)
error("Host '%s' has memory mode '%s', but the wanted one is '%s'. Restart netdata here to apply the new settings.", host->hostname, rrd_memory_mode_name(host->rrd_memory_mode), rrd_memory_mode_name(mode));
// update host tags
rrdhost_init_tags(host, tags);
}
rrdhost_cleanup_orphan_hosts_nolock(host);
rrd_unlock();
return host;
}
inline int rrdhost_should_be_removed(RRDHOST *host, RRDHOST *protected, time_t now) {
if(host != protected
&& host != localhost
&& rrdhost_flag_check(host, RRDHOST_FLAG_ORPHAN)
&& !host->connected_senders
&& host->senders_disconnected_time
&& host->senders_disconnected_time + rrdhost_free_orphan_time < now)
return 1;
return 0;
}
void rrdhost_cleanup_orphan_hosts_nolock(RRDHOST *protected) {
time_t now = now_realtime_sec();
RRDHOST *host;
restart_after_removal:
rrdhost_foreach_write(host) {
if(rrdhost_should_be_removed(host, protected, now)) {
info("Host '%s' with machine guid '%s' is obsolete - cleaning up.", host->hostname, host->machine_guid);
if(rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_ORPHAN_HOST))
rrdhost_delete_charts(host);
else
rrdhost_save_charts(host);
rrdhost_free(host);
goto restart_after_removal;
}
}
}
// ----------------------------------------------------------------------------
// RRDHOST global / startup initialization
void rrd_init(char *hostname, struct rrdhost_system_info *system_info) {
rrdset_free_obsolete_time = config_get_number(CONFIG_SECTION_GLOBAL, "cleanup obsolete charts after seconds", rrdset_free_obsolete_time);
gap_when_lost_iterations_above = (int)config_get_number(CONFIG_SECTION_GLOBAL, "gap when lost iterations above", gap_when_lost_iterations_above);
if (gap_when_lost_iterations_above < 1)
gap_when_lost_iterations_above = 1;
health_init();
registry_init();
rrdpush_init();
debug(D_RRDHOST, "Initializing localhost with hostname '%s'", hostname);
rrd_wrlock();
localhost = rrdhost_create(
hostname
, registry_get_this_machine_hostname()
, registry_get_this_machine_guid()
, os_type
, netdata_configured_timezone
, config_get(CONFIG_SECTION_BACKEND, "host tags", "")
, program_name
, program_version
, default_rrd_update_every
, default_rrd_history_entries
, default_rrd_memory_mode
, default_health_enabled
, default_rrdpush_enabled
, default_rrdpush_destination
, default_rrdpush_api_key
, default_rrdpush_send_charts_matching
, system_info
, 1
);
rrd_unlock();
web_client_api_v1_management_init();
}
// ----------------------------------------------------------------------------
// RRDHOST - lock validations
// there are only used when NETDATA_INTERNAL_CHECKS is set
void __rrdhost_check_rdlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking read lock on host '%s'", host->hostname);
int ret = netdata_rwlock_trywrlock(&host->rrdhost_rwlock);
if(ret == 0)
fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
}
void __rrdhost_check_wrlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking write lock on host '%s'", host->hostname);
int ret = netdata_rwlock_tryrdlock(&host->rrdhost_rwlock);
if(ret == 0)
fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
}
void __rrd_check_rdlock(const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking read lock on all RRDs");
int ret = netdata_rwlock_trywrlock(&rrd_rwlock);
if(ret == 0)
fatal("RRDs should be read-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
}
void __rrd_check_wrlock(const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking write lock on all RRDs");
int ret = netdata_rwlock_tryrdlock(&rrd_rwlock);
if(ret == 0)
fatal("RRDs should be write-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
}
// ----------------------------------------------------------------------------
// RRDHOST - free
void rrdhost_system_info_free(struct rrdhost_system_info *system_info) {
info("SYSTEM_INFO: free %p", system_info);
if(likely(system_info)) {
freez(system_info->os_name);
freez(system_info->os_id);
freez(system_info->os_id_like);
freez(system_info->os_version);
freez(system_info->os_version_id);
freez(system_info->os_detection);
freez(system_info->kernel_name);
freez(system_info->kernel_version);
freez(system_info->architecture);
freez(system_info->virtualization);
freez(system_info->virt_detection);
freez(system_info->container);
freez(system_info->container_detection);
freez(system_info);
}
}
void rrdhost_free(RRDHOST *host) {
if(!host) return;
info("Freeing all memory for host '%s'...", host->hostname);
rrd_check_wrlock(); // make sure the RRDs are write locked
// stop a possibly running thread
rrdpush_sender_thread_stop(host);
rrdhost_wrlock(host); // lock this RRDHOST
// ------------------------------------------------------------------------
// release its children resources
while(host->rrdset_root)
rrdset_free(host->rrdset_root);
while(host->alarms)
rrdcalc_unlink_and_free(host, host->alarms);
while(host->templates)
rrdcalctemplate_unlink_and_free(host, host->templates);
debug(D_RRD_CALLS, "RRDHOST: Cleaning up remaining host variables for host '%s'", host->hostname);
rrdvar_free_remaining_variables(host, &host->rrdvar_root_index);
health_alarm_log_free(host);
if (host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
#ifdef ENABLE_DBENGINE
rrdeng_exit(host->rrdeng_ctx);
#endif
}
// ------------------------------------------------------------------------
// remove it from the indexes
if(rrdhost_index_del(host) != host)
error("RRDHOST '%s' removed from index, deleted the wrong entry.", host->hostname);
// ------------------------------------------------------------------------
// unlink it from the host
if(host == localhost) {
localhost = host->next;
}
else {
// find the previous one
RRDHOST *h;
for(h = localhost; h && h->next != host ; h = h->next) ;
// bypass it
if(h) h->next = host->next;
else error("Request to free RRDHOST '%s': cannot find it", host->hostname);
}
// ------------------------------------------------------------------------
// free it
freez((void *)host->tags);
freez((void *)host->os);
freez((void *)host->timezone);
freez(host->program_version);
freez(host->program_name);
rrdhost_system_info_free(host->system_info);
freez(host->cache_dir);
freez(host->varlib_dir);
freez(host->rrdpush_send_api_key);
freez(host->rrdpush_send_destination);
freez(host->health_default_exec);
freez(host->health_default_recipient);
freez(host->health_log_filename);
freez(host->hostname);
freez(host->registry_hostname);
simple_pattern_free(host->rrdpush_send_charts_matching);
rrdhost_unlock(host);
netdata_rwlock_destroy(&host->health_log.alarm_log_rwlock);
netdata_rwlock_destroy(&host->rrdhost_rwlock);
freez(host);
rrd_hosts_available--;
}
void rrdhost_free_all(void) {
rrd_wrlock();
while(localhost) rrdhost_free(localhost);
rrd_unlock();
}
// ----------------------------------------------------------------------------
// RRDHOST - save host files
void rrdhost_save_charts(RRDHOST *host) {
if(!host) return;
info("Saving/Closing database of host '%s'...", host->hostname);
RRDSET *st;
// we get a write lock
// to ensure only one thread is saving the database
rrdhost_wrlock(host);
rrdset_foreach_write(st, host) {
rrdset_rdlock(st);
rrdset_save(st);
rrdset_unlock(st);
}
rrdhost_unlock(host);
}
// ----------------------------------------------------------------------------
// RRDHOST - delete host files
void rrdhost_delete_charts(RRDHOST *host) {
if(!host) return;
info("Deleting database of host '%s'...", host->hostname);
RRDSET *st;
// we get a write lock
// to ensure only one thread is saving the database
rrdhost_wrlock(host);
rrdset_foreach_write(st, host) {
rrdset_rdlock(st);
rrdset_delete(st);
rrdset_unlock(st);
}
recursively_delete_dir(host->cache_dir, "left over host");
rrdhost_unlock(host);
}
// ----------------------------------------------------------------------------
// RRDHOST - cleanup host files
void rrdhost_cleanup_charts(RRDHOST *host) {
if(!host) return;
info("Cleaning up database of host '%s'...", host->hostname);
RRDSET *st;
uint32_t rrdhost_delete_obsolete_charts = rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
// we get a write lock
// to ensure only one thread is saving the database
rrdhost_wrlock(host);
rrdset_foreach_write(st, host) {
rrdset_rdlock(st);
if(rrdhost_delete_obsolete_charts && rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE))
rrdset_delete(st);
else if(rrdhost_delete_obsolete_charts && rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS))
rrdset_delete_obsolete_dimensions(st);
else
rrdset_save(st);
rrdset_unlock(st);
}
rrdhost_unlock(host);
}
// ----------------------------------------------------------------------------
// RRDHOST - save all hosts to disk
void rrdhost_save_all(void) {
info("Saving database [%zu hosts(s)]...", rrd_hosts_available);
rrd_rdlock();
RRDHOST *host;
rrdhost_foreach_read(host)
rrdhost_save_charts(host);
rrd_unlock();
}
// ----------------------------------------------------------------------------
// RRDHOST - save or delete all hosts from disk
void rrdhost_cleanup_all(void) {
info("Cleaning up database [%zu hosts(s)]...", rrd_hosts_available);
rrd_rdlock();
RRDHOST *host;
rrdhost_foreach_read(host) {
if(host != localhost && rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS) && !host->connected_senders)
rrdhost_delete_charts(host);
else
rrdhost_cleanup_charts(host);
}
rrd_unlock();
}
// ----------------------------------------------------------------------------
// RRDHOST - save or delete all the host charts from disk
void rrdhost_cleanup_obsolete_charts(RRDHOST *host) {
time_t now = now_realtime_sec();
RRDSET *st;
uint32_t rrdhost_delete_obsolete_charts = rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
restart_after_removal:
rrdset_foreach_write(st, host) {
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)
&& st->last_accessed_time + rrdset_free_obsolete_time < now
&& st->last_updated.tv_sec + rrdset_free_obsolete_time < now
&& st->last_collected_time.tv_sec + rrdset_free_obsolete_time < now
)) {
rrdset_rdlock(st);
if(rrdhost_delete_obsolete_charts)
rrdset_delete(st);
else
rrdset_save(st);
rrdset_unlock(st);
rrdset_free(st);
goto restart_after_removal;
}
}
}
// ----------------------------------------------------------------------------
// RRDHOST - set system info from environment variables
int rrdhost_set_system_info_variable(struct rrdhost_system_info *system_info, char *name, char *value) {
int res = 0;
if(!strcmp(name, "NETDATA_SYSTEM_OS_NAME")){
freez(system_info->os_name);
system_info->os_name = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_OS_ID")){
freez(system_info->os_id);
system_info->os_id = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_OS_ID_LIKE")){
freez(system_info->os_id_like);
system_info->os_id_like = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_OS_VERSION")){
freez(system_info->os_version);
system_info->os_version = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_OS_VERSION_ID")){
freez(system_info->os_version_id);
system_info->os_version_id = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_OS_DETECTION")){
freez(system_info->os_detection);
system_info->os_detection = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_KERNEL_NAME")){
freez(system_info->kernel_name);
system_info->kernel_name = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_KERNEL_VERSION")){
freez(system_info->kernel_version);
system_info->kernel_version = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_ARCHITECTURE")){
freez(system_info->architecture);
system_info->architecture = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_VIRTUALIZATION")){
freez(system_info->virtualization);
system_info->virtualization = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_VIRT_DETECTION")){
freez(system_info->virt_detection);
system_info->virt_detection = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_CONTAINER")){
freez(system_info->container);
system_info->container = strdupz(value);
}
else if(!strcmp(name, "NETDATA_SYSTEM_CONTAINER_DETECTION")){
freez(system_info->container_detection);
system_info->container_detection = strdupz(value);
}
else {
res = 1;
}
return res;
}
/**
* Alarm Compare ID
*
* Callback function used with the binary trees to compare the id of RRDCALC
*
* @param a a pointer to the RRDCAL item to insert,compare or update the binary tree
* @param b the pointer to the binary tree.
*
* @return It returns 0 case the values are equal, 1 case a is bigger than b and -1 case a is smaller than b.
*/
int alarm_compare_id(void *a, void *b) {
register uint32_t hash1 = ((RRDCALC *)a)->id;
register uint32_t hash2 = ((RRDCALC *)b)->id;
if(hash1 < hash2) return -1;
else if(hash1 > hash2) return 1;
return 0;
}
/**
* Alarm Compare NAME
*
* Callback function used with the binary trees to compare the name of RRDCALC
*
* @param a a pointer to the RRDCAL item to insert,compare or update the binary tree
* @param b the pointer to the binary tree.
*
* @return It returns 0 case the values are equal, 1 case a is bigger than b and -1 case a is smaller than b.
*/
int alarm_compare_name(void *a, void *b) {
RRDCALC *in1 = (RRDCALC *)a;
RRDCALC *in2 = (RRDCALC *)b;
if(in1->hash < in2->hash) return -1;
else if(in1->hash > in2->hash) return 1;
return strcmp(in1->name,in2->name);
}
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